Play hard to get is a figurative way of saying it. In fact, it means to express something before suppressing it, which is a common contrasting technique in our poetry. In order to emphasize a certain meaning, we start from the opposite side, such as Li Bai's poem: Snow in the Tianshan Mountains in May, There is only cold without flowers. I fight with the golden drum at dawn, sleep with my jade saddle in my arms at night, and wish to put the sword under my waist to kill Loulan. The first part of the poem tries its best to describe the suffering of war life, and the last two lines describe the suffering in this situation. Ambition, and the difficult environment reflects this ambition. This is the method.